What we did:

• tx1 reverse power trip adjusted before run.
• mesh at 5 MHz reference position.
• use 5.125 MHz
• bring all 6 tx up.
  
• tx1 tripped reverse power.
• about 65-70 KW. reverse power around 6.kw
• Alfredo readjusted reverse power trip level tx  1.
• bring up all 6 again
• rf drive limit light coming on tx 1
• rvs power led on card lights around 6 KW reverse power on meter.
• went to td 8 for rogowski coil measurements
• file 11: all tx but 1 tripped
• file 12: all tx but 1 tripped (around 12:17)
  
• file  13: only tx 6 (radial pointing at td 8)
• file 14: all tx but tx 1 trips
• file 15 : all but tx2 trips (check logs).. tx1,2 lowered . 5 db
• file 16: copy of file 15
• file 17:  all tx on .. no trips
• file 18:  tx 1,2 on other off
• file 19: tx 3,4 on . others off
• file 20: tx 5,6 on . others off
• Afternoon: 14:09
• rain , thunder, lightning.
  
• bring up tx,, try cycling tx
• tx1 rf limit light on.
• tx1 trips. rvs power
• 14:25 cycling 3sec on , 3 sec off
• brought power down 1 db,  cycling 3sec on,off
• looked at arcing while cycling.
  

Summary plots of the day (.ps) (.pdf)

• Page 1: morning, 5 MHz
• around 12:00 we did rogowski coil measurements
  
• Page2 : blowup  when we made rogowski coil measurements
• use max hold for power plots.
  
• the rf was turned off then on to trigger the scope. so some of the power measurement got no rf.
  
• file 12 taken around 12.3
• file 13; 12.345
• file 14:
  
• file 15: 12.4
• file 16: 12.4 (same as 15)
• file 17:12.45
  
• file 18: 12.47
• file 19: 12.48
• file 20: 12.49
  
• Page 2: afternoon
• started 3sec on,off around 14.4 hours.
• this power data used the peak hold.
  

Problems we found:

• tx 1 5 mhz continues to trip on reverse power, rf drive limit light is on
• looking at schematics, dana pointed out that this is probably caused by the pa drive current
  
• it is being compared to the forward power. too much current relative to power probably turns on light.
• saw arcing when 3 sec cycling .
  

home_~phil